降低PLC控制系統成本的方法

在實際使用PLC的過程中，I/O點數的花費，占用大量的開支，當前PLC的每一點平均價格高 達數百元，進口的機型則高達千元。減少所需的I/O點數是降低系統硬件費用的主要措施，在大多數場合下，被控對象的輸出點小于輸入點，實現控制任務需要的檢測點較多，或者說需要的操作按鈕較多，這樣在選型時PLC的輸出點數目較容易滿足要求，對輸入點則可能不易滿足。因此，I/O點數的減少則主要在于減少輸入點數，若能減少輸入點數的開銷，便能很好地降低費用。...

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【主營產品】
1：Invensys Foxboro（�？怂共�羅）：I/A Series系統，FBM（現場輸入/輸出模塊）順序控制、梯形邏輯控制、事故追憶處理、數模轉換、輸入/輸出信號處理、數據通信及處理等。

2：Invensys Triconex: 冗余容錯控制系統、基于三重模件冗余（TMR）結構的最現代化的容錯控制器。

3：Westinghouse（西屋）： OVATION系統、WDPF系統、WEStation系統備件。

4：Rockwell Allen-Bradley: Reliance瑞恩、SLC500/1747/1746、MicroLogix/1761/1763/1762/1766/1764、
CompactLogix/1769/1768、Logix5000/1756/1789/1794/1760/1788、PLC-5/1771/1785等。

5：Schneider Modicon（施耐德莫迪康）：Quantum 140系列處理器、控制卡、電源模塊等。

6：ABB：工業機器人備件DSQC系列、Bailey INFI 90等。

7：Siemens(西門子)：Siemens MOORE， Siemens Simatic C1，Siemens數控系統等。

8：Motorola（摩托羅拉）：MVME 162、MVME 167、MVME1772、MVME177等系列。

9：XYCOM：I/O 、VME板和處理器等。

10：GE FANUC(GE發那科)：模塊、卡件、驅動器等各類備件。

11：Yaskawa（安川）：伺服控制器、伺服馬達、伺服驅動器。

12：Bosch Rexroth（博世力士樂）：Indramat，I/O模塊,PLC控制器,驅動模塊等。

13：Woodward（伍德沃德）：SPC閥位控制器、PEAK150數字控制器。

14:工業機器人系統備件。

15： 英維斯(TRICONEX):TRICON DCS的系列，如：3805E

另外還有 雅馬哈(YAMAHA), 貝加萊(B&R)， 歐姆龍(OMRON), KEBA， 安川(YASKAWA) 等品牌的停產備件。

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資訊來源：漳州鼎晟達自動化設備有限公司